You made the right call. Skills were added to Antigravity and I immediately started creating and using them. I never used custom MCP servers, but skills were immediately obvious to me.
An example: I made a report_polisher skill that cleans some markdown formatting, check image links, and then uses pandoc to convert it to HTML. I ask the tool itself created the skill, then I just tweaked it.
How is the fidelity of something like this? It seems like it would randomly fuck it up once in a blue moon. Is that not the case? For your use case I don't understand why you would want an AI involved at all.
Skills may have have code attached to them, so in this case the formatting and converting is all code.
The value of skills is that they are attached to the context of an LLM for few tokens, and the LLM activates one when it feels that it relevant (and brings it into context). It's a chepear alternative to having a huge CLAUDE.md (or equivalent) file.
Please do open-source your skill and blog about it. Also, would like to hear from your experience after a few months of use. Like - how many times did you use the skill, did you run into some problems later (due to some unexpected thing in the markdown), did the skill generalize - or do you have to make tweaks for particular inputs.